I really like the blue lettering and numbers on the Autometer cobalt gauges, but they cost too damn much, so im wondering if I could just replace the bulb on a regular black faced autometer gauge with a blue led bulb? If so, how do I do it and what kind of bulb will I need? and where to buy that led bulb?

 

regular autometers are backlit while the cobalt only the numbers light up. good luck